Costco has added platinum to its precious metals offering, but experts caution that the coins and bars are not considered a safe-haven investment.

The Swiss-made bars are only available to Costco members, whose annual fees range from $65 to $130. Made of 999.5 pure platinum, the bars are non-refundable and limited to one transaction per membership at a maximum of five units per order. They are only available online and can’t be delivered to customers in Louisiana, Nevada or Puerto Rico.

The big-box chain is now selling Swiss-made 1 oz. platinum bars for $1,089.99 on its website, but a Costco membership is required for purchase. The bar features Lady Fortuna, the Roman goddess of prosperity, according to the manufacturer’s website.